Rolls for making barbed wire



(No Moda.) 2 sheets-shet'lnl J.BAUMBACH. ROLLS EUR MAKING BARBBD WIRE. I No. 381,320. l Patented A-pr.l7,`188v8. l

wv Pngns. Phomumngmpher, wnn's nnnnnn C the metal of the web between the teeth being upset or pressed into the body of the strip by f UNITED STATES PATENT' OFFICE.

ROLLS FOR MAKING BARBED WIRE.,

SPECIFICATION forming part of Letters Application filed April 5, 1887.

To all whom it may concern:

Be it known that I, MICHAEL J. BAUMBACH, a citizen of the United States, residing at Pittsburg, in the county o f Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Rolls for Rolling Barbed Wire; and I do hereby declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, which form part of this specication. p

This invention has relation to rolls for rolling barbed wire, and has for its object the provision of means for producing by the operation of .rolling a continuous strip or strand of metal having integral teeth orba'rbs at intervals and without the formation of any waste or scrap whatsoever.

Myinvention consists in the provision of a pair of rolls adapted to operate upon a previously-prepared flat stripof metal having a bead at one edge, oneof said rolls being provided with cutters and means for causing said cutters to advance from the center to the periphery of the'roll, and thereby cut away the web of the strip, leaving the barb or tooth,

the surface of the roll between the cutters.

My invention further consists in the novel construction, combination, and arrangement of parts hereinafter described and claimed.

Referring to the accompanying drawings, Figure 1 is a vertical sectional View of a pair of rolls constructed according to my improve Inents; Fig. 2,.an enlarged section of a portion of the lower roll of Fig. 1; Fig. 3, an elevation'looking at the edges of the rolls; Fig. 4, a perspective view of one of the cutters; Fig. 5, a face view of a portion of one of the lower rolls. Fig. 6 is a perspectiveview of the cutters; and Fig. 7 a perspective view of one of the sections of the lower rolls, the cutters and springs `being omitted.

A designates the upper, and B therlower, roll of a pair of rolls mounted onshafts journaled in suitable housings and driven by the usual gearing. (Not shown.) The upper roll, A, is mounted ,upon a shaft, a, and is formed with peripheral flanges a a and a V-shaped groove, a2, and said roll mayconsist either of a single piece of metal or it may consist of Patent No. 381,320, dated April 17, 1888.

Serial No. 233.744. (No model.)

when joined together a slit or slot, b2, is left. 6o y Eachgof the sections of the roll B is formed with a series of radial wide grooves, C C C 0,.; which spread out at their outer ends, and in each such groove is a tongue, c, and a head, c', l the said tongues and heads being made in-` tegral with the sections of the roll, or attached thereto, as desired. The heads c' are cut away on their adjoining faces, so that the slit bis continued through the heads c c'. The hollow shaft b, upon which the lower roll is mounted, 7o surrounds a stationary shaft, D, which has a cam-groove, d, cut in it, and the hollow shaft b has holes bi b3 coinciding with the grooves C C of the roll, and through these holes project the ends of the cutters which operate-to form the barb upon the strip of metal, aswill be presently described. The cutters it in the cam-groove cl and rest upon the bottomof said groove, and as the roll revolves are in succession forced out toward the periphery of the 8o roll. rIhe saidcutters consist each of a pair of 'similar jaws, E E, pivoted to a tongue, e',

at e e, and having wedge-shaped cutting ends e2 e. Each of the jaws E E is formed with a shoulder, ett-upon which bears the end of a spring, e, seated in a cavity, er. The jaws E .E embrace the tongue c, and whenthe cutters -are forced out bythe action ofthe cam-groove d the said jaws are spread apart by the triangular head c. n p

In Fig. 1 of the drawings the jaws at the top ofthe lower roll are shown in their prol `jected position, while the jaws at the bottom are in their retracted position, the springs e* e4 always tending to press the jaws into con 95 tact with the bottom of the cam-grooved.

Operation: The strip of metal, which has "been previously rolled to the appropriate form and size, and isy shown in Figs.- l and 2 as passing through the roll, consists of a strip roo having a bead, f, at one edge and a web, f. This strip being presented to the rolls, the web f fits into the slot or slit b. As the rolls revolve, and when one of the removable cutters comes to the top of lthe roll, the web of the strip passes in between the heads c', and the cutting-jaws E E, rising up on each side, cut into the web, leaving a triangular tooth or barb, f2. As the rolls continue to revolve, and the substance of the web back of the tooth having been upset, the web will not enter the slit b, and hence it is upset or forced into the bead f until such time as it meets Athe grooves C C, when it again enters between heads c', and another tooth is cut by the next cutter.

The operation is continuous and rapid, and there being no scrap formed there is a consequent saving of metal.

Having described my invention, I claim- 1. In rolls for rolling barbed or toothed rods, the combination, with a roll having a slit or slot in the periphery, of movable cutters litted in radial grooves in said roll, and means for automaticallyprojecting said cutters while the roll is in operation, substantially as described.

2. In rolls for rolling barbed or toothed rods,

the combination, with a roll having a peripheral Vslit or slot and radial ho1es,with triangular heads or blocks set in said holes and divided to form a continuation of said slit or slot, of movable cutters and means for projecting said cutters and retracting the same,

lwhereby a strip of metal passing through said v constructed and arranged substantially as described.

In testimony that I elai m the foregoing I have hereunto set my hand this 25th day of March,

MICHAEL J. BAUMBACH. Witnesses:

H. C. EVERT, JOHN F. ATcHEsoN. 

